killmer



(No Model.) l A R. W. KIL'LMER. PISTON ROD'PAGKING.

NITED STA REUBEN W. KLLMER, OF TERRE HAUTE, INDIANA.

P|sToN-RoD PACKING.

SPECIFICATION forming part of Letters Patent No. 324,776, dated August18, 1885.

Application [illd Ma)` 1B, 1885. (No model.)

To all whom t may concern:

Be it known that l, REUBENV W. KILLMER, of Terre Haute, in the county ofVigo, and in the State of Indiana, have invented certain new and usefulImprovements in Piston-Rod Packing; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing had to the accompanying drawings, in which- Figurel is aperspective view of the parts of my packing` separated from each otherand from their connecting parts. Fig. 2 is a like view of the same ascombined for use, a portion of the stufng-box being removed to show thearrangement of parts; and Fig. 3 is a vertical central section of saidpacking and stuffing-box and the gland.

Letters of like name and kind refer to like parts in each of thefigures.

A The design of my invention is to provide a s1mple,inexpensive,andefficient means whereby a steam or gas tight joint can be readily madeand maintained around a piston-rod or valve-rod at the point where itenters such pressure; and to this end said invention consists,principally, in arod-packing composed of a sectional conical metalringthat is adapted to fit within a stutng-boxsand to embrace the rod to bepacked, and compressible material which is placed above, below, andaround the exterior of said ring, in combination with the stuffing-box,and with a gland for conipressing said packing longitudinally within thesame, substantially as and for the purpose hereinafter specified.

It consists, further, in combining with the lower or inner portion ofthe conxpressible packing an interior metal thimble, which operates toprevent contact at such point between said packing and the rod to bepacked, substantially as and for the purpose hereinafter shown.

It consists, finally, in the special construction and combination ofparts, substantially as and for the purpose hereinafter shown anddescribed.

In the annexed drawings, A represents a stuffing-box, and B a glandwhich is adapted to be moved into the same by means of nuts c, thattravel upon threaded studs C, all of said parts being of usualconstruction.

Through the gland n and stuffing-box A' placed a series of elasticdisks, E, that loosely fill the space between the inner face of thelatter and said rod and extend outward nearly to the outer end of saidstuffingbox. The inner half of the disks E are placed around a metalthimble, F, which at its inner end has an outward projecting iiange, f,and from thence extends upward through the central openings of saiddisks, as shown. Said thimble has such interior diameter as to enablethe rod D to pass freely through without contact with the same. Above oroutside of the end of the thimble F the disksEhave successivelyincreasedinterior dimensions, and into the conical recess thus formed is placed ametal ring, G, which exteriorly corresponds to the form of said recess,while interiorly it has a round straight opening that corresponds indiameter to the like feature of the rod D. Said ring G is preferablyconstructed from Babbitt metal, but may be made from brass or any othermeta-l or composition desired. It is divided into two sections by meansof two cuts, which longitudinally are parallel with the axis andtransversely are upon lines that are tangential to the inner peripheryof said ring, and, intersecting the same upon opposite sides, he veparallel lines, the construction being such that the sections of saidring may be moved uponeaeh other, so as to lessen or increase thedistance between opposite sides of its central opening.

Above the ring G, which preferably projects above the disks E, is placedan elastic disk, H, which has such dimensions as to enable it to fillthe space laterally between the rod D and the wall of the stuffing-boxA, and upon the same bears the inner end of the gland B. If, now, saidgland is pressed inward, the disks E and H will be compressed in suchdirection, and those surrounding the thimble F, being unable to expandinwardly, will be eX- panded outwardly and caused to closely ll saidstuffing-box at such point, while the divided metal ring G will beforced inwardly by its downward movement within the contiguous disks E,and will be held with a yielding pressure firmly against the rod D.

IOO

The disks E, surrounding the divided ring such point, while the bearingsof the sections of ring upon each other are or by use soon become sotight as to render leakage between them practically impossible.

The thimble F operates to hold the inner disks, E, out of contact withthe rod D, and

thus prevent the latter from drawing the elastic material from whichsaid washers are constructed through the bottom of thestufing-box Aint-o the pressure-space beyond, by which means the efficiency anddurability of the packing is largely increased.

In order that the compressible portion of the packing may be easilyplaced in or removed from position, each disk E or H is divided upon aradial line at one point, and at such point may be readily openedoutward until capable of passing over the rod D.

The packing thus constructed iscapable of use in any ordinarystuffing-box of the dimensions for which it is adapted without change ofeither box or gland, and costs but slightly more than ordinarycompressible packing, while its durabilityis many times that of any ofthe kinds commonly used.

Haring thus set forth the nature and merits of my invention, what Iclaim is- 1. A rodepacking composed of a sectional conical metal ringthat is adapted to fit Within a stu'fiingbox and to embrace the rod tobe packed, and compressible material which is placed above, below, andaround the exterior of said ring, in combination with the stuiingbox,and with a gland for compressing said packing longitudinally within thesame, substantially as and for the purpose specified.

2. In combination with the lower or inner portion of the compressiblepacking, an interior metal thimble, which operates to'prevent contact atsuch point between said packing and the rod to be packed, substantiallyas and for the purpose shown.

3. The hereinbefore-described rodpacking, consisting ofthe elasticdisksEand H,:the metal thimble F, and the longitudinally-divided metalring G, in combination with each other, with the stuffingbox A, thegland B, the rod D, and with means, substantially as shown, whereby saidgland may be pressed into said stuiiing box, substantially as and forthe purpose specied.

In testimony that I claim the foregoing I have hereunto set my hand this7th day of April, 1885.

REUBEN XV. KILLMER.

Witnesses:

WM. W. RUMsEY, T. C. ANDEnsoN.

